An unknown pool recipe drops for me

According to Catwhoorg’s post in the Co* forums, the Force Feedback: Knockback/Damage/Endurance Reduction recipe is of an unknown pool currently. Here is my reward message for the end of a mission I ran tonight:

The character in question is a level 32 Dark/Kin corruptor who was exemped to level 30 while running a task force. Here is what the normal reward looks like for defeating a minion:

This particular mission had an end-boss who we had already defeated, and the reward came when we beat the final minion, a Longbow Minigun, in the boss-room. I’m calling this a pool B drop. Comments?